Common use of Class II Clause in Contracts

Class II. On-Site Historic Property Protection Measures 2.1 The following historic property protection measures may be approved for undertakings under the conditions detailed below: (a) Linear sites (e.g., historic trails, roads, railroad grades, ditches) may be crossed or breached by equipment in areas where their features or characteristics clearly lack historic integrity (i.e., where those portions do not contribute to site eligibility or values). (1) Crossings are not to be made at the points of origin, intersection, or terminus of linear site features. (2) Crossings are to be made perpendicular to linear site features. (3) The number of crossings is to be minimized by project and amongst multiple projects in the same general location. (4) The remainder of the linear site is to be avoided, and traffic is to be clearly routed through designated crossings. (b) Accumulation of sufficient snow over archaeological deposits or historic features to prevent surface and subsurface impacts. Undertaking activities may be implemented over snow cover on historic properties under the following conditions: (1) The cover must have at least 12 inches depth of compacted snow or ice throughout the duration of undertaking activities on sites. (2) All concentrated work areas (e.g., landings, skid trails, turnarounds, and processing equipment sites) shall be located prior to snow accumulation and outside historic property boundaries. (c) Placement of foreign, non-archaeological material (e.g., padding or filter cloth) within transportation corridors (e.g., designated roads or trails, campground loops, boat ramps, etc.) over archaeological deposits or historic features to prevent surface and subsurface impacts caused by vehicles or equipment. Such foreign material may be utilized on historic properties under the following conditions: (1) Engineering will design the foreign material depth to acceptable professional standards; (2) Engineering will design the foreign material use to assure that there will be no surface or subsurface impacts to archaeological deposits or historic features; (3) The foreign material must be easily distinguished from underlying archaeological deposits or historic features; (4) The remainder of the archaeological site or historic feature is to be avoided, and traffic is to be clearly routed across the foreign fill material; (5) The foreign material must be removable should research or other heritage need require access to the archaeological deposit or historic feature at a later date; and (6) Indian tribe or other public concerns about the use of the foreign material will be addressed prior to use. (d) Placement of barriers within or adjacent to site boundaries to prevent access to or disturbance of deposits or historic features, or for protection of other sensitive resources on-site, when such barriers do not disturb subsurface deposits or lead to other effects to the site. (1) Non-intrusive barriers: wooden and other barriers anchored with rebar; rocks/boulders or other items placed on the surface; weed-free straw ▇▇▇▇▇ or straw ▇▇▇▇▇ anchored with rebar; or other nonintrusive barriers approved by HPMs or qualified Heritage Program staff.